It is a fairly common practice to block categories in WordPress to avoid potential duplicate content issues. all-in-one-seo-pack can be set to add noindex,follow robots meta tags to the category pages. I strongly recommend it. There isn't any value in having search engines index category pages. Keep then focused on your articles. You want them to follow the links on the category pages, but skip indexing the category pages.
Originally Posted by Seattle SEO
I don't know why your plugin directories are being indexed. There should not be any visible links to the plugin directories in your client-side code. You might want to scan your client-side code (using View, Source) to see if links to the directories are showing up in the code.
BTW, your server is displaying the contents of the directories. It should not be doing that. It is a security issue.
You can find a fix here:
Prevent Directory Listing - Web Site Security Tutorial | Tech-Evangelist
Google will probably stop indexing the plugin directories if they start generating a status code 403 when an index file does not exist, which is what they should be doing.
If you got this from a Google page, the writer doesn't know very much about web servers. Having root access to a server is something entirely different from placing a file in a site's root directory. Every site owner has FTP access to the root directory, but most hosting companies do not allow root access to the server.
To use a robots.txt file, you'll need to have root access to your server.
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